cve/2021/CVE-2021-29983.md

### [CVE-2021-29983](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29983)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2091%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Firefox%20for%20Android%20could%20get%20stuck%20in%20fullscreen%20mode&color=brighgreen)

### Description

Firefox for Android could get stuck in fullscreen mode and not exit it even after normal interactions that should cause it to exit. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1719088

#### Github
No PoCs found on GitHub currently.